Insulator and wire-clamp.



PATENTED NOV. 21, 1905.

J. F. TAUBOLD. INSULATOR AND WIRE CLAMP.

APPLICATION FILED FEB.26.1904.

Inventor: %%v 3/ wiiiwsses WM 6% fm aw%m@ JOHN F. TAUBOLD, OF SCRANTON,PENNSYLVANIA.

INSULATOR AND WIRE-CLAMP.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed February 26, 1904.. Serial No. 195,364.

To all whom, it may concern.-

Be it known that I, J OHN F. TAUBoLD, a citizen of the United States,residing at Scranton, in the county of Lac'kawanna and State ofPennsylvania, have invented certain new and useful ImprovementsinInsulatorsand l/Vire-Glamps, of which the following is a specification.

This invention relates to improvements in insulators of the kind thatare used to support, clamp, and at the same time insulate electricalconductor-wires from their supportingpoles or the cross-arms or partsthereof.

The objects of my improvement are, first, to provide a means for quicklyand securely fastening or clamping the wire to its support, which in thepresent case we will call the cross-armg second, to provide at the sametime a practically thorough insulation for wires of either low or highvoltage circuits; third, to provide a convenient means to deadend awire, and, fourth, to provide a suitable means to carry two wires uponone insulator in the manner required for making transpo sitions oftelephone-wires. I attain these objects with the device illustrated inthe accompanying drawings, in which Figure 1 is a vertical elevation ofthe device as it appears when in an open position ready to receive thewire, also showing the cross-arm in cross-section. Fig. 2 is a verticalsection on line 2 2, Fig. 1, and shows the device in the other or closedposition, clamping the wire, and the cross-arm in vertical longitudinalsection. Fig. 3 is a horizontal section on line 3 3, Fig. 1. Fig. 4 is ahorizontal section at line 4 4, Fig. 2. Fig. 5 is an elevation of partof the device modified for transposition or two wires. Fig. 6 is asection similar to Fig. 2, but shows a modification of the deviceadapted for high-voltage wires. Fig. 7 is a full plan view of Fig. 6.

Similar characters refer to similar parts throughout the several views.

A is the pin part or main metallic body of the device, the lower part Bof which is in the form. of a rod threaded at its lower extremity C andadapted to pass through the cross-arm D with suitable insulation,consisting of insulating-sleeves E G, interposed between said pin andcross-arm D.

Clamping-jaw J has a downwardly-extending toothed bar K, which fitsloosely into a slot L in the body A, so that the jaw J may be readilyraised and lowered for clamping the wire by the action of thetoothed-pinion part M of the lever N upon the teeth of bar K.

Lever N is fulcrumed upon pin 0, which pin is held rigidly in positionby lugs P P, which are integral with the main part or body A of thedevice.

Body A has dovetailed into its upper surface a jaw-plate R,of insulatingmaterial, which is designed to be used in conjunction with a similar andsimilarly-fitted jaw-plate S, which is fitted to jaw J. Each of thejaw-plates R and S has in its adjacent surface a groove to keep the wirein its proper transverse position, and on one end of the jaw-plates,diametrically opposite each other, are lips c to limit as well as may bethe end movement of the jaw-plates. The grooves in the jaw-plates are ofdifferent sizes, corresponding to the size of the wire to be supported,and the jawplates are removable, so that they may be changed toaccommodate the various sizes of wire.

Fastened to pivot Q, at the top of body J is a cup-support U for a camV. The cup U in this case is shaped like a gong and has an opening WV inits periphery so situated that when in a certain position the upper endof lever N can pass radially through this opening or notch. The cam V(shown most clearly in Fig. 4) is constructed so that when rotated aboutthe pivot Q, in the direction indicated by the arrow o it will pressagainst the turned-up end of the lever N, thus looking and tightlyholding the wire in the manner to be hereinafter explained.

X is a removable anchor-block of insulat ing material which may beinserted into the dovetail slot (t in the side of body A for the purposeof dead-ending a wire, as shown in Fig. 3. This block has a hole 6through it for the purpose of fastening the end if of the wire T, whichmay be secured in the manner shown. (Block X and its slot (0 have notbeen shown in Figs. 5 and 6, as they are intended to be used moreparticularly with the form shown in the other figures.)

If the parts of this insulator are in the relative positions shown inFigs. 2 and i and it is desired to withdraw the wire, it is necessary toturn or rotate cup U and cam V about pivot Q, in the opposite directionto the arrow o until the opening W coincides with the lever N and thenmove lever N outward through opening and downward. This rotation oflever N about its fulcrum 0 will cause its teeth M of the pinion-lever Nto act upon the teeth on bar K, tending to raise bar K, and this barbeing part of jaw J will cause the bar and jaw to rise simultaneouslyand by raising jaw-plate R will release the wire T. To insert a wire,reverse movement is made, so that the Wire is simply laid in the grooveof the lower jaw-plate R, and then the upward movement of the lever Ncauses the wire to be clamped, as before described, and it is then onlynecessary to rotate the cup part U, containing cam V, forcibly in thedirection of the arrow 11, and the wire is securely clamped. It may beplainly observed from Figs. 2 and ithat the action of cam V againstlever N tends to tighten the jaw-plates it and S and clamp the wire. Theslope of cam V is gradual enough, so that it cannot slip of? lever N,which lever will therefore remain securely locked until cam V ispurposely rotated.

The modification shown in Fig. 5 is a substitute for the jaw-plates inFig. 2, which will render the device useful as a transpositioninsulator. in Fig. 5 the dovetailed slot which contained jaw-plate R hassimply been made deeper and of the form shown, and jawplate :5 is itselfdepressed into the top of body A far enough to allow a jaw-plate Y to beinterposed between plate S and the jaw R in such a manner that one wiremay be inserted between plates S and Y and the other wire between platesY and R. Then the level-N is brought up and cam V rotated. Said wireswill be pressed fast, as explained for-Fig. 2.

' It will be noticed, however, that jaw-plate 'Y has lips (Zmstead of,and correspondmg to thelips c, in jaw-plates R and S, which lips (Z arealso to limit the end motion of jaw-plate Y.

Figs. 6 and 7 show the means employed to adapt my improvement for usewith wires of exceedingly-high voltage, and the form here shown issimilar to that shown in Fig. 2, except that in Fig. 6 there is a largedisk-like cover Z supported on top of the device and the insulation E FG has been made of a form better adapted to wires carrying currents ofvery high voltage. The top of the upper insulation E has in this casebeen made larger, flared out and down to form a petti coat a, and at thesame time covers an annular groovef. Upon the bottom of the lowerinsulation G has been formed in a somewhat similar manner the petticoatg, which preserves a similar annular space 7L between it and nut i.erably rubber, interposed between sleeves E and G foiuthe purpose ofthoroughly completing the insulation through the cross-arm. The cover Z,as here shown, is of a form adapted to shed water. The water runs fromthe surface of the cover into the annular ridge y, around thls ridge ortrough, and out through the openings .2, which in this case are shown Fis an insulating-sleeve, prefon a line parallel to the length of thecrossarm D.

From the above it will be understood that my clamping-insulator issecured to the crossarm of a pole or in other suitable position. A wiremay be entered between the jaw-plates when the jaws are open, and bymeans of the rack and pinion-lever the jaws may be moved to clampingposition. The pinion-lever is held in clan'iping position by the cam onthe rotating cup U.

\Vhat I claim is 1. An insulator for telegraph-wires, consistingessentially of a fixed body, a movable jaw having a rack-bar extendingalongside said body, a pinion-lever pivotally supported by the body andengaging said rack-bar, and insulating jaw-plates on the body and jaw.

2. A wire insulator and clamp having an in sulated body, a pinion-leverpivoted thereto, a jaw having a sliding rack engaging said pinion-lever,and a rotating cam carried by the jaw in position to lock thepinion-lever, all combined.

A wire-insulator having an insulated body and a clamping-jaw thereon, apinionlever on the body engaging a rack on the jaw, and a notched cupcarried by the jaw, having a cam in position to lock said pinion-lever,all combined.

i. Ina wire-clamp, the coi'nbination of a fixed body, an insulatingjaw-plate thereon, a movable jaw having an insulating jaw-plate andmeans for opening, closing, and locking the same, and aninsulating-plate between said jaw-plates, whereby a plurality of wiresmay be held.

5. In a wire-clamp, the combination of a fixed body having an insulatingjawplate, and an insulating anchoring-block, a movable jaw having aninsulating jaw-plate, and means for clamping the movable jaw on thebody.

6. in a wire-clamp, the fixed body and a movable jaw thereon, eachprovided with insulating jaw-plates, means for clamping the jaw, and aremovable insulatii'ig anchor-block on the body.

7. A telegraph insulator and clamp, consisting essentially of a bodyhaving an insulating jaw-plate, a movablejaw above said jawplate andalso provided with an insulatii'ig jawplate, and a cover on the movablejaw in position to protect both insulating jaw-plates.

ln testimony whereof I aiiix my signature in presence of two witnesses.

J OH N F. TAU BOLD.

Witnesses:

G. Wns'r, E. M. S. PRIsx.

